| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pedro Martinez | BOS | 7.15 | 199805200_CHA_BOS |
| Roger Clemens | TOR | 5.36 | 199805180_SEA_TOR |
| Tom Glavine | ATL | 5.18 | 199805180_ATL_HOU |
| Mike Hampton | HOU | 3.15 | 199805180_ATL_HOU |
| Andy Ashby | SDN | 2.77 | 199805201_SDN_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Castillo | DET | -2.85 | 199805200_DET_MIN |
| Dennis Springer | TBA | -2.35 | 199805190_TBA_TOR |
| Doug Drabek | BAL | -1.69 | 199805180_TBA_BAL |
| Bill Swift | SEA | -1.66 | 199805200_SEA_TEX |
| Allen Watson | ANA | -1.54 | 199805180_ANA_DET |
Based on accumulated WAA for this season up to 1998-05-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.55 | Pedro Martinez | 72.3 | BOS |
| +002+ | 4.49 | Curt Schilling | 77 | PHI |
| +004+ | 4.16 | Greg Maddux | 72 | ATL |
| +006+ | 3.33 | Mike Hampton | 72.7 | HOU |
| +007+ | 3.26 | Francisco Cordova | 69 | PIT |
| +009+ | 3.16 | Al Leiter | 51.3 | NYN |
| +010+ | 3.16 | Kevin Brown | 68 | SDN |
| +011+ | 3.13 | Chuck Finley | 70.3 | ANA |
| +012+ | 3.12 | Tom Glavine | 58 | ATL |
| +013+ | 3.11 | Andy Ashby | 71.7 | SDN |
| +018+ | 2.74 | Bartolo Colon | 61.7 | CLE |
| +019+ | 2.7 | Hideki Irabu | 38.7 | NYA |
| +020+ | 2.69 | Aaron Sele | 64.7 | TEX |
| +024+ | 2.46 | Jeff Fassero | 49 | SEA |
| +027+ | 2.39 | Jose Lima | 67.7 | HOU |
| +029+ | 2.3 | Jamie Moyer | 69.3 | SEA |
| +034+ | 2.27 | Todd Stottlemyre | 71.7 | SLN |
| +036+ | 2.23 | Brian Bohanon | 34 | NYN |
| +038+ | 2.21 | Pete Harnisch | 67.3 | CIN |
| +039+ | 2.16 | Rolando Arrojo | 59.3 | TBA |
| +040+ | 2.14 | Rick Reed | 55.7 | NYN |
| +041+ | 2.08 | Woody Williams | 59 | TOR |
| +043+ | 2.06 | Ramon Martinez | 68 | LAN |
| +048+ | 1.92 | Carlos Perez | 72.7 | WAS |
| +050+ | 1.91 | Derek Lowe | 38.7 | BOS |
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